I had a fantastic stay in the apartment for 2 1/2 months. The building is beautiful and very well equipped with a stunning rooftop pool and gym facility. There is even a sauna in the building! It is about a 10 minute walk to Sukhumvit - the main road with the shopping malls and public transport. The 1-bedroom apartment itself has everything you need from cutlery to bedding to a balcony. The small kitchen has no cooking facilities (aside from a microwave), however, eating in Bangkok is usually cheaper than cooking for yourself.
Nui was great! She met me on arrival and was very prompt with all communications. After my stay, she checked me out before my very early flight. All in all, it was a great stay.
Also, note: there will be additional charges for wifi, electricity, and water.